Add 28/84 and 12/49
28/84 + 12/49 is 85/147.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 49 is 588
Next, find the equivalent fraction of both fractional numbers with denominator 588 - For the 1st fraction, since 84 × 7 = 588,
28/84 = 28 × 7/84 × 7 = 196/588 - Likewise, for the 2nd fraction, since 49 × 12 = 588,
12/49 = 12 × 12/49 × 12 = 144/588 - Add the two like fractions:
196/588 + 144/588 = 196 + 144/588 = 340/588 - 340/588 simplified gives 85/147
- So, 28/84 + 12/49 = 85/147
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/84+12/49 28/84+24/49 28/84+12/98 28/84+36/49 28/84+60/49 28/84+84/49